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avm2: Remove unnecessary range checks on local-modifying ops in optimizer

This commit is contained in:
Lord-McSweeney 2024-03-23 12:24:13 -07:00 committed by Lord-McSweeney
parent dec9f07f5f
commit 9f44281a52
1 changed files with 11 additions and 37 deletions
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48
core/src/avm2/optimize.rs
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@ -83,12 +83,8 @@ impl<'gc> Locals<'gc> {
self.0[index] = value;
}
fn at(&self, index: usize) -> Option<OptValue<'gc>> {
self.0.get(index).copied()
}
fn len(&self) -> usize {
self.0.len()
fn at(&self, index: usize) -> OptValue<'gc> {
self.0[index]
}
}
@ -242,20 +238,14 @@ pub fn optimize<'gc>(
| Op::IncLocalI { index }
| Op::DecLocal { index }
| Op::DecLocalI { index } => {
if (*index as usize) < initial_local_types.len() {
initial_local_types.set_any(*index as usize);
}
initial_local_types.set_any(*index as usize);
}
Op::HasNext2 {
object_register,
index_register,
} => {
if (*object_register as usize) < initial_local_types.len() {
initial_local_types.set_any(*object_register as usize);
}
if (*index_register as usize) < initial_local_types.len() {
initial_local_types.set_any(*index_register as usize);
}
initial_local_types.set_any(*object_register as usize);
initial_local_types.set_any(*index_register as usize);
}
_ => {}
}
@ -384,14 +374,10 @@ pub fn optimize<'gc>(
stack.push_any();
}
Op::DecLocalI { index } => {
if (*index as usize) < local_types.len() {
local_types.set_any(*index as usize);
}
local_types.set_any(*index as usize);
}
Op::IncLocalI { index } => {
if (*index as usize) < local_types.len() {
local_types.set_any(*index as usize);
}
local_types.set_any(*index as usize);
}
Op::Increment => {
stack.pop();
@ -605,27 +591,15 @@ pub fn optimize<'gc>(
}
}
Op::Kill { index } => {
if (*index as usize) < local_types.len() {
local_types.set_any(*index as usize);
}
local_types.set_any(*index as usize);
}
Op::SetLocal { index } => {
let stack_value = stack.pop();
if (*index as usize) < local_types.len() {
if let Some(stack_value) = stack_value {
local_types.set(*index as usize, stack_value);
} else {
local_types.set_any(*index as usize);
}
}
let stack_value = stack.pop_or_any();
local_types.set(*index as usize, stack_value);
}
Op::GetLocal { index } => {
let local_type = local_types.at(*index as usize);
if let Some(local_type) = local_type {
stack.push(local_type);
} else {
stack.push_any();
}
stack.push(local_type);
}
Op::GetLex { .. } => {
stack.push_any();